commit c7bd4c25650704d4d065eb4ce2a122d2a80ce804
Author: Chris Wilson <[email protected]>
Date: Tue Apr 24 16:36:50 2012 +0100
drm/i915: Remove too early plane enable on pre-PCH hardware
Enabling the plane before we have assigned valid address means that it
will access random PTE (often with conflicting memory types) and cause
GPU lockups. However, enabling the plane too early appears to workaround
a number of bugs in our modesetting code.
Cc: Franz Melchior <[email protected]>
References: https://bugs.freedesktop.org/show_bug.cgi?id=39947
References: https://bugs.freedesktop.org/show_bug.cgi?id=41091
References: https://bugs.freedesktop.org/show_bug.cgi?id=49041
Signed-off-by: Chris Wilson <[email protected]>
Acked-by: Jesse Barnes <[email protected]>
Signed-off-by: Daniel Vetter <[email protected]>
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https://bugs.launchpad.net/bugs/686388
Title:
[i965gm] GPU lockup - Invalid GTT entry during Display B Fetch
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